So I had the same experience yesterday on DFW-RDU. Not one F/A could have been a day over 25 and I was boarding I heard the F F/A say "oh this is my first time flying the M80." I thought "oh Lord, obviously not DFW based if she's never been on the M80." So I was skeptical about the service level but she was outstanding. I really have found the younger crews to be much more attentive. Not once during the 2:15 flight did she sit down (which you can't say the same about the more senior crews). The service was well paced (once she figured out the ovens....LOL). Overall one of the better crews I've had in quite some time!